HP
Harold Peterson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Audubon, Iowa
Our Model Tree links this Harold Peterson across the 1920, 1930 and 1940 US Censuses in Audubon, Iowa (XGBoost, ~Confirmed), with identified parents Edmund & Edward — first a son (b.~1916), then head of a 3-person household.
Age 14
b. ~1916
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Audubon, Iowa |
| Surname | Peterson |
| Given Name | Harold E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Oakfield Township |
| Est. Birth Year | ~1916 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Edward Peterson | Head | — | 48 | ~1882 |
| Lida Peterson | Spouse | — | 42 | ~1888 |
| Harold Peterson | Son | — | 14 | ~1916 |
Census Appearances
1920
Audubon, Iowa
Son, age 4
Audubon, Iowa · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Harold |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Audubon, Iowa
Son, age 14
Audubon, Iowa · implied b. ~1916 — 3 household members
| Surname | Peterson |
| Given Name | Harold E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Audubon-County, Iowa
Head, age 24
Audubon-County, Iowa · implied b. ~1916 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Harold E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Oakfield Township |
| 1935 Residence (County) | Audubon |
| Occupation | Farming |
| Industry | stock farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Harold Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edmund Petersen (~0.92 confidence) and father Edward Peterson (~0.92 confidence) and mother Loda Petersen (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edmund Petersen
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Edward Peterson
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Loda Petersen
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Peterson
Son · 1930 · age 14 · b. ~1916 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Audubon, Iowa
Open full size
1930 US Federal Census — Audubon, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel640:0523)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Norman S. Anderson | 6 | Son | — | Iowa |
| 52 | Fred H. Price | 27 | Lodger | Laborer | Iowa |
| 53 | Arthur Mcfarland | 49 | Head | Farmer | Iowa |
| 54 | Donald A. Mcfarland | 18 | Son | — | Iowa |
| 55 | Gertrude Berg | 40 | Housekeeper | Housekeeper | Iowa |
| 56 | John B. Nelson | 49 | Head | Farmer | Iowa |
| 57 | Pearl Nelson | 41 | Wife | — | Iowa |
| 58 | Howard L. Nelson | 18 | Son | — | Iowa |
| 59 | John R. Heiken | 75 | Head | — | Germany |
| 60 | Bertha R. Heiken | 73 | Wife | — | Germany |
| 61 | Edward M. Peterson | 48 | Head | Farmer | Iowa |
| 62 | Lida Peterson | 42 | Wife | — | Iowa |
| 63 | Harold E. Peterson THIS PERSON | 14 | Son | Laborer | Iowa |
| 64 | George H. Hansen | 46 | Head | Farmer | Iowa |
| 65 | Louise C. Hansen | 46 | Wife | — | Iowa |
| 66 | Marlyn R. Hansen | 19 | Son | Laborer | Iowa |
| 67 | Imogene M. Hansen | 16 | Daughter | — | Iowa |
| 68 | Ralph G. Hansen | 11 | Son | — | Iowa |
| 69 | Inez L. Hansen | 10 | Daughter | — | Iowa |
| 70 | Morris E. Hansen | 5 | Son | — | Iowa |
| 71 | George Jr. Hansen | 4 | Son | — | Iowa |
| 72 | Jens P. Jensen | 43 | Head | Farmer | Denmark |
| 73 | Louis C. Jensen | 40 | Brother | Farmer | Denmark |
| 74 | Martin L. Thygesen | 28 | Head | Farmer | Iowa |
| 75 | Myra M. Thygesen | 24 | Wife | — | Iowa |
| 76 | Doris J. Thygesen | 4 | Son | — | Iowa |
| 77 | Emma Peterson | 44 | Head | — | Iowa |
| 78 | Alva E. Peterson | 25 | Son | Laborer | Iowa |
| 79 | Lester E. Peterson | 16 | Son | Laborer | Iowa |
| 80 | Edna C. Peterson | 22 | Daughter-in-law | — | Iowa |
| 81 | Floyd E. Peterson | 3 | Gr. Son | — | Iowa |
| 82 | Wayne E. Peterson | 1 | Gr. Son | — | Iowa |
| 83 | Gilbert C. Knudsen | 63 | Head | Merchant | Denmark |
| 84 | Esther M. Knudsen | 15 | Daughter | — | Iowa |
| 85 | Roy H. Knudsen | 14 | Son | — | Iowa |
| 86 | John S. Johnson | 47 | Head | Blacksmith | Denmark |
| 87 | Alma M. Johnson | 52 | Wife | — | Illinois |
| 88 | Robert E. Johnson | 13 | Son | — | Iowa |
| 89 | Manuel Christensen | 45 | Head | Farmer | Denmark |
| 90 | Minnie Christensen | 41 | Wife | — | Iowa |
| 91 | Lucille Christensen | 20 | Daughter | — | Iowa |
| 92 | Eddie Christensen | 18 | Son | Laborer | South Dakota |
| 93 | Erma M. Christensen | 15 | Daughter | — | Iowa |
| 94 | Everett R. Christensen | 13 | Son | — | Iowa |
| 95 | Alice J. Christensen | 11 | Daughter | — | Iowa |
| 96 | Harold M. Christensen | 10 | Son | — | Iowa |
| 97 | Myra R. Christensen | 8 | Daughter | — | Iowa |
| 98 | Pauline M. Christensen | 6 | Daughter | — | Iowa |
| 99 | Arnold L. Christensen | 5 | Son | — | Iowa |
| 100 | Ivan H. Christensen | 2 | Son | — | Iowa |
Pedigree Summary
Harold
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)